Initial commit

2020-04-07 13:03:04 +00:00
commit 00f842d9bf
1673 changed files with 471161 additions and 0 deletions
--- a/wp-content/plugins/activitypub/includes/rest/class-webfinger.php
+++ b/wp-content/plugins/activitypub/includes/rest/class-webfinger.php
@ -0,0 +1,119 @@
+<?php
+namespace Activitypub\Rest;
+
+/**
+ * ActivityPub WebFinger REST-Class
+ *
+ * @author Matthias Pfefferle
+ *
+ * @see https://webfinger.net/
+ */
+class Webfinger {
+	/**
+	 * Initialize the class, registering WordPress hooks
+	 */
+	public static function init() {
+		\add_action( 'rest_api_init', array( '\Activitypub\Rest\Webfinger', 'register_routes' ) );
+		\add_action( 'webfinger_user_data', array( '\Activitypub\Rest\Webfinger', 'add_webfinger_discovery' ), 10, 3 );
+	}
+
+	/**
+	 * Register routes
+	 */
+	public static function register_routes() {
+		\register_rest_route(
+			'activitypub/1.0', '/webfinger', array(
+				array(
+					'methods'  => \WP_REST_Server::READABLE,
+					'callback' => array( '\Activitypub\Rest\Webfinger', 'webfinger' ),
+					'args'     => self::request_parameters(),
+				),
+			)
+		);
+	}
+
+	/**
+	 * Render JRD file
+	 *
+	 * @param  WP_REST_Request   $request
+	 * @return WP_REST_Response
+	 */
+	public static function webfinger( $request ) {
+		$resource = $request->get_param( 'resource' );
+
+		$matches = array();
+		$matched = \preg_match( '/^acct:([^@]+)@(.+)$/', $resource, $matches );
+
+		if ( ! $matched ) {
+			return new \WP_Error( 'activitypub_unsupported_resource', \__( 'Resource is invalid', 'activitypub' ), array( 'status' => 400 ) );
+		}
+
+		$resource_identifier = $matches[1];
+		$resource_host = $matches[2];
+
+		if ( \wp_parse_url( \home_url( '/' ), PHP_URL_HOST ) !== $resource_host ) {
+			return new \WP_Error( 'activitypub_wrong_host', \__( 'Resource host does not match blog host', 'activitypub' ), array( 'status' => 404 ) );
+		}
+
+		$user = \get_user_by( 'login', \esc_sql( $resource_identifier ) );
+
+		if ( ! $user ) {
+			return new \WP_Error( 'activitypub_user_not_found', \__( 'User not found', 'activitypub' ), array( 'status' => 404 ) );
+		}
+
+		$json = array(
+			'subject' => $resource,
+			'aliases' => array(
+				\get_author_posts_url( $user->ID ),
+			),
+			'links' => array(
+				array(
+					'rel'  => 'self',
+					'type' => 'application/activity+json',
+					'href' => \get_author_posts_url( $user->ID ),
+				),
+				array(
+					'rel'  => 'http://webfinger.net/rel/profile-page',
+					'type' => 'text/html',
+					'href' => \get_author_posts_url( $user->ID ),
+				),
+			),
+		);
+
+		return new \WP_REST_Response( $json, 200 );
+	}
+
+	/**
+	 * The supported parameters
+	 *
+	 * @return array list of parameters
+	 */
+	public static function request_parameters() {
+		$params = array();
+
+		$params['resource'] = array(
+			'required' => true,
+			'type' => 'string',
+			'pattern' => '^acct:([^@]+)@(.+)$',
+		);
+
+		return $params;
+	}
+
+	/**
+	 * Add WebFinger discovery links
+	 *
+	 * @param array   $array    the jrd array
+	 * @param string  $resource the WebFinger resource
+	 * @param WP_User $user     the WordPress user
+	 */
+	public static function add_webfinger_discovery( $array, $resource, $user ) {
+		$array['links'][] = array(
+			'rel'  => 'self',
+			'type' => 'application/activity+json',
+			'href' => \get_author_posts_url( $user->ID ),
+		);
+
+		return $array;
+	}
+}